Insulator



WITNESSES:

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H. N. RICHARDS. INSULATOR. APPLICATION'HLED FEB. 19, I921- mmmumL INVENTOR Howard H Bfcharda UNITED STATES PAT ENT OFFI CE.

HOWARD N. HOUSE E VANIA.

To all whom 2'25 may concern.

Be it known that I, HOWARD N. RICHARDS, a citizen ofthe United States, and a resident of Pittsburgh, in the county of Allegheny and State of Pennsylvania, have invented a new and useful Improvement in Insulators, of which the following is a specification.

My invention relates to insulators and particularly to means for holding lock washers in position on trolley conductors.

he object of my invention is to provide a device of the above indicated character that shall embody normally separable parts insulators for supporting cone type for supporting trolleyconductors, are usually provided with a depending stud for cooperation with, a trolley-conductor ear or clamp. In its final position, relative tothe insulator and to theconductor, the ear or clamp must be in alinement with the in relatively tight engagement on the stud to prevent chattering and damage to the threads, caused by passing trolleys. A look washer or similarmeans is usually provided to take up the back-lash between the threads of the stud and the ear.

It is desirable to have as few separate parts as possible, particularly small parts, to prevent loss and to facilitate shipping and mounting.

In practising my invention, I provide a relatively simple and inexpensive means for so mounting a normally separate lock washer on a trolley-conductor insulator as to permit the washer and the insulator to be shipped as a unitary structure, thereby, precludingloss and reducing the number of mounting operations.

Figure 1 of the accompanying drawings is a view, partially in side elevation and partially in section, of a cap-and-cone insulator embodying my invention. I

ig. 2 is a bottom plan view of the device shown in Fig. l and v Figs. 3 and 4 are, respectively, bottom plan and side elevation detail views of a member embodied in my invention.

A stud 1, having a depending threaded end portion 2 and a headed end portion 3, is embedded in an insulating cap member 4 IN SULATOR.

Specification of Letters Patent.

' operation of the latter.

RICHARDS, OFPITTSBURGI-I, PENNSYLVANIA, .A SSIGNOR TO WESTING- LECTRIC & MANUFACTURING COMPANY, A CORPORATION OF PENNSYIr Patented Oct. 11, 1921. SerialNo. 446,306. I

of molded material. An intermediate metal ring or'supportingmember is provided stantially hook shape for the reception of a y guy wire (not shown). The interior per imeteror surface 8 of the ring 5 is shaped to conform to 'a frusto-coni'cal molded insulating member 9 havinggan opening 10 through which thestud 1 extends. tively thin metal'washer 11, having laterallyprojecting spaced peripheral projections 12 and a usual'washer 13 for reinforcingthe permanently mounted by being insulating member 9 during the molding The washers 11 and 3 are so positioned as to provide an ingorcountersunk portion 14: in the her 9 for the reception The latter is held in position by bending the projections 12 around the outer edges thereof. The projections 12, being very thin and yieldable, do not interfere with the usual functioning. of the lock washer. hen a trolley earor clamp (not shown) is advanced inwardly on the stud, it is permitted sufficient adjustment along the stud, while in binding, cooperationwith the lock washer, to permit it to be alined with a of alock washer 15.

' trolley conductor.

he device 18 slmple and compact in conready replacement the lock washer.

3. The combination with a screw threaded member, and a lock washer thereon, of a second washer having a portion interlocking placed in position in the Y openmemwith the lock Washer to hold the latter in position.

4. The combination With a screw-threaded member and a lock washer thereon, of a relatively thin Washer having a portion bent into interlocking engagement With the lock Washer to hold the latter in position.

5. The combination with an insulator and a stud projecting therefrom, of a lock Washer and bendable means for interlocking the insulator and stud with the lock Washer.

6. The combination With an insulator and a stud projecting therefrom of a lock Washer embracing the stud adjacent to the insulator, relation to the stud and having a portion bent into holding relation to the lock Washer.

' 7 The combination With a trolley-conductor insulator and a stud projecting therefrom, of a lock Washer surrounding the'stud adjacent to the insulator and a relatively thin metal Washer secured in position and disposed around the stud having a portion bent into holding relation to the lock Washer.

8. The combination With a trolley-conductor insulator having a countersunk opening and a stud projecting from the opening, of a lock Washer surrounding the stud adja-- cent to the insulator and a relatively thin metal Washer secured in position in the countersunk portion of said opening and having a portion bent around a portion of the lock Washer to hold the latterin position.

9. The combination With a trolley-conductor insulator having a countersunk opening and a stud projecting from the opening,

and a member secured 1n proximate of a lock Washer surrounding the stud adj acent to the insulator and a relatively thin metal Washer molded in position in the countersunk portion of said opening and having edge projections bent-around an edge of the lock washer to hold the latter in position.

10. The combination With a trolley-con- V ductor insulator having a countersunk opening and a stud pro ecting from the opening, of a relatively thin metal Washer molded in position in said opening and having spaced projections on its outer edge, a second Washer for reinforcing said relatively thin Washer molded in position in the countersunk portion of said-opening and a lock Washer disposed adjacent to said second Washer, said projections being bent around the outer edges of the lock Washer to hold the latter in position.

11. An insulator comprising molded insulating material adapted for the reception of a bolt or stud and a lock Washer on the bolt, and a member molded in position in said insulating material for holding the lock Washer in position.

12. An insulator comprising a body of moldedinsulating material adapted for the reception of a bolt or stud and a lock Washer on the bolt, and a member molded in position in-said insulating material and having a movable portion for holding the lock Washer in position.

In testimony whereof, I have hereunto subscribed my name this 15th day of February,.1921.

HOWARD N. RICHARDS.

a body of 

